21. They could not go to the theater together because his free time never ______ with hers.
A. collide B. comply C. coincide D. cope
<collide>
collide 碰撞，相冲撞
collision 冲突
bump 撞击
bump into 邂逅，偶然遇到
</collide>
<comply>
comply (with) 遵守（法律法规）
adhere (to) 坚持，遵守，粘着
conform (to) 符合，遵守（法律法规）
</comply>
cope (with) 处理
